BEGIN:VCALENDAR
VERSION:2.0
PRODID:IEEE vTools.Events//EN
CALSCALE:GREGORIAN
BEGIN:VTIMEZONE
TZID:Europe/Lisbon
BEGIN:DAYLIGHT
DTSTART:20230326T020000
TZOFFSETFROM:+0000
TZOFFSETTO:+0100
RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=3
TZNAME:WEST
END:DAYLIGHT
BEGIN:STANDARD
DTSTART:20221030T010000
TZOFFSETFROM:+0100
TZOFFSETTO:+0000
RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=10
TZNAME:WET
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTAMP:20230104T201122Z
UID:5054F625-8677-40E3-9255-C5C92DBFA9AC
DTSTART;TZID=Europe/Lisbon:20230104T160000
DTEND;TZID=Europe/Lisbon:20230104T180000
DESCRIPTION:Reconfigurable Intelligent Surfaces (RISs) are programmable met
 asurfaces that can adaptively steer received electromagnetic energy\nin de
 sired directions by employing controllable phase shifting cells. Among oth
 er uses\, an RIS can modify the propagation environment\nin order to provi
 de wireless access to user locations that are not otherwise reachable by a
  base station. Alternatively\, an RIS can steer\nthe waves away from parti
 cular locations in space\, to eliminate interference and allow for co-exis
 tence of the wireless network with\nother types of fixed wireless services
  (e.g.\, radars\, unlicensed radio bands\, etc.). The novel approach prese
 nted in this talk is a\nwave-controlled architecture that properly account
 s for the maximum possible change in the local reflection phase that can b
 e achieved by\nadjacent RIS elements. It obviates the need for dense wirin
 g and signal paths that would be required for individual control of every\
 nRIS element\, and thus offers a substantial reduction in the required har
 dware. We specify this wave-controlled RIS architecture in detail\nand dis
 cuss signal processing and machine learning methods that exploit it in bot
 h point-to-point and multi-cell MIMO systems. Such\nimplementations can le
 ad to a dramatic improvement in next-generation wireless\, radar\, and nav
 igation systems where RIS finds wide\napplications. They have the potentia
 l to improve the efficiency of spectrum utilization and coexistence by ord
 ers of magnitude.\n\nCo-sponsored by: Instituto de Telecomunicações and 
 CH08471 - Portugal Section Chapter\,VT06\n\nSpeaker(s): Ender Ayanoglu\, \
 n\nAgenda: \n16:00 Ender Ayanoglu\, Wave-Controlled Metasurface-Based Reco
 nfigurable Intelligent Surfaces\n\nVirtual: https://events.vtools.ieee.org
 /m/338795
LOCATION:Virtual: https://events.vtools.ieee.org/m/338795
ORGANIZER:fjv@ubi.pt
SEQUENCE:12
SUMMARY:Wave-Controlled Metasurface-Based Reconfigurable Intelligent Surfac
 es
URL;VALUE=URI:https://events.vtools.ieee.org/m/338795
X-ALT-DESC:Description: <br /><p>Reconfigurable Intelligent Surfaces (RISs)
  are programmable metasurfaces that can adaptively steer received electrom
 agnetic energy<br />in desired directions by employing controllable phase 
 shifting cells. Among other uses\, an RIS can modify the propagation envir
 onment<br />in order to provide wireless access to user locations that are
  not otherwise reachable by a base station. Alternatively\, an RIS can ste
 er<br />the waves away from particular locations in space\, to eliminate i
 nterference and allow for co-existence of the wireless network with<br />o
 ther types of fixed wireless services (e.g.\, radars\, unlicensed radio ba
 nds\, etc.). The novel approach presented in this talk is a<br />wave-cont
 rolled architecture that properly accounts for the maximum possible change
  in the local reflection phase that can be achieved by<br />adjacent RIS e
 lements. It obviates the need for dense wiring and signal paths that would
  be required for individual control of every<br />RIS element\, and thus o
 ffers a substantial reduction in the required hardware. We specify this wa
 ve-controlled RIS architecture in detail<br />and discuss signal processin
 g and machine learning methods that exploit it in both point-to-point and 
 multi-cell MIMO systems. Such<br />implementations can lead to a dramatic 
 improvement in next-generation wireless\, radar\, and navigation systems w
 here RIS finds wide<br />applications. They have the potential to improve 
 the efficiency of spectrum utilization and coexistence by orders of magnit
 ude.</p><br /><br />Agenda: <br /><p>16:00 Ender Ayanoglu\, Wave-Controlle
 d Metasurface-Based Reconfigurable Intelligent Surfaces</p>
END:VEVENT
END:VCALENDAR